Skip the drm_bridge_chain_pre_enable call when the bridge is already
pre_enabled. This make pre_enable and post_disable (thus
pm_runtime_get/put) symmetric.
Fixes: 46f206304db0 ("drm/bridge: ps8640: Rework power state handling")
Signed-off-by: Pin-yen Lin <treapking@xxxxxxxxxxxx>
Reviewed-by: Robert Foss <rfoss@xxxxxxxxxx>
Reviewed-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
---
(no changes since v1)
drivers/gpu/drm/bridge/parade-ps8640.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/parade-ps8640.c b/drivers/gpu/drm/bridge/parade-ps8640.c
index 4b361d7d5e44..08de501c436e 100644
--- a/drivers/gpu/drm/bridge/parade-ps8640.c
+++ b/drivers/gpu/drm/bridge/parade-ps8640.c
@@ -557,7 +557,8 @@ static struct edid *ps8640_bridge_get_edid(struct drm_bridge *bridge,
* EDID, for this chip, we need to do a full poweron, otherwise it will
* fail.
*/
- drm_atomic_bridge_chain_pre_enable(bridge, connector->state->state);
+ if (poweroff)
+ drm_atomic_bridge_chain_pre_enable(bridge, connector->state->state);
edid = drm_get_edid(connector,
ps_bridge->page[PAGE0_DP_CNTL]->adapter);
--
2.40.0.rc1.284.g88254d51c5-goog
